Incandescent gas-lighting.



R. LANGHANS.

INCANDESCENT GAS LIGHTING.

APPLICATION FILED MAY 14, 1912.

Patented Jan. 13, 1914.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH 50., WASHINGTON, D. c.

Patented Jan. 13, 1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH CO-,\VASHINGTON. uv c4 UNTTED @TATFS PATENT @FFTQE.

RUDOLF LANG-HANS, OF BERLIN, GERMANY.

INCANDESCENT GAS-LIGHTING.

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To all 10710122 it may concern:

Be it known. that I, Rumou LAnerrANs, a subject of the Emperor of Austi'ia-l'lungary, and whose residence is No. 9 Schonhauser Allee, Berlin, Kingdom of Prussia, German Empire, have invented a new and useful Improvement in Incandescent Gas Lighting, of which the following is a speci fication.

My invention relates to upright incandes cent gas burners with suspended mantle.

Heretofore in burners of that class the mantle is generally suspended from a holder or support mounted on a prolonged part of the upright gas-mixing-tube which passes through the mantle. This system has many disadvantages. In passing the mantle over the gas-mixing-tube, the edges of the lower opening in the mantle are very easily injured and this leads to a disproportionate consumption of the fragile mantles. The prolonged part of the tube passing through the mantle diminishes considerably the lighting effect by conducting ofi heat and by absorbing a considerable amount of light reflected by the inner wall of the mantle. Furthermore the fitting and exact adjustment of the mantle on the burner require a wearisome and minute manipulation. In order to avoid these disadvantages the mantle is in accordance with the present invention suspended from and centered by the transparent chimney oi glass, quartz-glass or a similar transparent material or by the holder of the chimney which is in turn mounted adjustably in longitudinal direction relatively to the gas mixing tube.

In the accompanying drawings Figure 1 is a longitudinal section of a burner constructed in accordance to the invention. Fig. 2 is a view of a modified form of the mantle adapted to be used in the burner of Fig. 1. Figs. 8 and 4 are sections similar to that of Fig. 1 of two further modifications of the burner. Fig. P is a fragmentary section of another modification. Fig. t shows another modification in fragmentary section and fragmentary elevation. Figs. 5 and 6 are segregated details showing modifications of my invention, said figures being combined side elevations and sections.

In Fig. 1 a is the nozzle b the gas mixing tube screwed on the nozzle a and c the upper detachable slotted head thereof. Adjustably mounted relatively to the mixing Specification of Letters Patent.

Application filed May 14, 1912.

Patented Jan. 13, Serial No. 697,184.

tube preferably by screwing on the nozzle a is a sleeve 65. f is the chimney of glass, quartz-glass or other transparent material. The chimney is provided with openings 0 for the admission of air and has on its lower part a narrow mouth or cylindrical socket 0 preferably but not necessarily provided with a metal sleeve 6 which may be fastened to the glass socket c by a suitable cement. The socket c with or without the sleeve 6 fits into the cup shaped sleeve d so that the chimney f is held centrally and is prevented from tilting by the sleeve 03 and that it may also be readily and exactly adjusted in a longitudinal direction relatively to the mixing tube 5 and its slotted head 0 by turning the screw threaded sleeve (Z. The top of the chimney f is provided with a cylindrical socket g for suspending and centering the mantle m. The mantle m is fastened in a usual manner on the mantle-supporting ring 7b preferably of ceramic material and provided in a known manner with three or more upright arms k having lugs 2?. The arms 7& are provided with ribs it as means for guiding and centering the ring 72. and the mantle m on the chimney f and consequently also relatively to the mixing tube 6 and its slotted head 0. The ring 71' resting with the lugs 2' on the socket g, the mantle m can be easily and exactly adjusted in height relatively to the slots of the head 0 by turning the sleeve d. Suspended from the ring it is an annular cup Z as means for guiding the flame in the upper part of the mantle m along the in nor wall of the same. Tn the modification shown in Fig. 2 the separate guiding member is omitted. Means for guiding the flame in the upper part of the mantle and along the inner wall of the same, are provided by having the inner diameter of the mantle-ring it reduced in size to correspond to the outer diameter of the slotted head, the mantle m being constructed with a pear-like frame. Furthermore the ribs of Fig. 1 are substituted by the downwardly directed hooks 71: of the lugs 2', so that in this case the ring it is guided and centered on the outer circumference of the socket g of the chimney f.

In F 3 the mouth or socket c of the chimney is omitted and the sleeve (Z is provided with uprights 79, j. a z bly three. of wire connected with a ring for supporting a downward bent flange 7 of the chimney lillti socket g. The prolonged ends 01: the wireuprights p guide and center the chimney f and the latter in turn guides and centers the mantle ring it by the ribs 70 in the same manner as in Fig. 1. i

In Fig. l the chimney f is fitted in the sleeve (Z but the mantle-ring ii is suspended, guided and centered by means of a ring 8 detachably mounted on a connecting ring g of wire uprights 7) provided in the same way as in Fig. 3 on the sleeve (Z.

It is obvious that in all the modifications shown the interior of the incandescent mantle is absolutely free from any heat or light absorbing body, that the mantle can be easily and exactly adjusted in relation to the slots of the slotted head or the mixing tube and that any exchange of the mantle by the consumers can be effected very readily and without danger of injuring the edges of the mantle openings.

Various constructional modifications may be made within the scope of the invention. Thus, for the thread connection of the sleeve (Z with the nozzle a may be substituted a thread connection of the sleeve with the mixing tube (see Fig. P), or a pin Z) and in clined slot J as shown in Fig. 4

The chimney 7" shown in the drawings (Figs. 13) as consisting of one piece may consist of two or more pieces of a cup shaped bottom part and a cylindrical upper part fitting on into the other preferably with ground in edges (Fig. or of a cup shaped bottom part, a cylindrical middle part and a shoulder-shaped annular upper part also fitting together (Fig. 6). The holes r openings for admission of the air may be provided in such cases either in the cup-shaped bottom part or near the lower edge of the cylindrical middle or upper part (Fig. 6) respectively.

hat 1 do claim as my invention, and desire to secure by Letters Patent of the United States, is

1. In an upright incandescent gas burner with suspended mantle the combination of a gas mixing tube having a nozzle and a slotted head with its upper end disposed adjacent the bottom of said mantle. a sleeve mounted adjustably in longitudinal direction relatively to the said mixing tube, a chimney of transparent material, mantle ring suitably mounted to partake of the adjustable move ments oi said sleeve and carrying an incandescent mantle with an opening at the bottom for passing the slotted head of the mire ing tube, and means for guiding the mantle into a central position relatively to the said slotted head, substantially as set forth.

2. in an upright incandescent gas burner with suspended mantle the combination of a gas mixing tube having a nozzle and a slotted head with a sleeve mounted adjustably in longitudinal direction relatively to the said mixing tube, a chimney of transparent material, fitting with a narrow mouth into the said sleeve and supporting a mantle ring carrying an incandescent mantle with a bottom opening for passing the slot-ted head of the mixing tube and means for centering the said mantle relatively to the said slot-ted head, substantially as set forth.

3. In an upright incandescent gas burner with suspended mantle the combination of a mixing tube having a nozzle and a slotted head withasleevemounted adjustably in longitudinal direction relatively to the said mixing tube, a chimney of transparent. material, fitting with a narrow mouth into the said sleeve and supporting a mantle ring carrying an incandescent mantle with a bottom open ng for passing the slotted head of the mixing tube, guiding members formed on the mantle-ring for centering the said mantle in relation to the said slotted head, substantially as set forth.

4. In an upright incandescent gas burner with suspended mantle the combination of a gas mixing tube having a nozzle and a slotted head with its upper end disposed adjacent to the bottom of said mantle, a sleeve mounted adjustably in longitudinal direction relatively to the said mixing tube, a chimney of transparen inaterial carried by said sleeve, a mantle ring carrying the incandescent mantle which has an opening at the bottom for passing the slotted head of the mixing tube, means for centering the mantle relatively to the said slot-ted head and means for g iiding the flame within the upper part of the mantle the inner w ll or the mantle, substantially as set forth.

5. in an upright incandescent gas burner with suspended mantle the combination of a gas mixing tube having a nozzle and a slotted head with a sleeve mounted adjustably in longitudinal direction relatively to the said mixing tube, a chimney of transparent material carried by said sleeve. a mantle ring the inner diameter of which corresponds with the outer diameter of the said slotted head carrying an incandescent inantle of pear like form having a bottom open ing for passing the slotted head of the min ing tube, substantially as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

RUDOLF LANGHANS.

Witnesses HENRY Hasrnn, Wonnnamn HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

